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What is the difference between combustible and non – combustible substances?

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Combustible substance:
A substance that burns in air and produces heat and light is called Combustible substances.
It requires heat fuel and air for burning
E.g. Diesel, petrol, kerosene etc.
Non – combustible substanceL
Substances that don’t burn in the presence of air are called non-combustible substances.
They do not burn in the presence of flame.
E.g. Glass, stones etc.

Final Answer: A substance that burns in air and produces heat and light is called Combustible substances.
Substances that don’t burn in the presence of air are called non-combustible substances.

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